Insulating panels for boilers and the like



Dec. 29, 1964 w. WAITE INSULATING PANELS FOR BOILERS AND THE LIKE Vl/IIIi/lillllllllll Bwmna IIIIIIIIIIIII ri l l fillllllllllllll.

INVENTQR W/A L MM WA! r5 7101? NE Y5 I .IIII II I Ill.

United States Patent 3,163,265 INSULATING PANEL FOR BDHERS AND THE LEE William Waite, Chicago, llL, assignor to Transco Inc,

Chicago, Ill., a corporation of Delaware Filed Apr. 1, 1963, Ser. No. 269,673 6 Claims. (Cl. 189-34) whereby the insulated panels are disposed in facial abutment with the boiler tubes while being independently supported.

A further object of this invention is to provide in a device of this character an expansion clip for mounting together prefabricated insulated panels associated with boilers and the like.

A further object of this invention is to provide an insulated prefabricated panel comprising an aluminum backing sheet to which is connected a sheet of insulating material which in turn is carried by a corrugated outer metallic skin with the metallic skin carrying insulating pin connections for both the insulating material and aluminum backing.

Other objects will appear hereinafter.

The invention consists in the novel combination and arrangements of parts to be hereinafter described and claimed.

The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:

FIG. 1 is a fragmentary side sectional view of a portion of a boiler together with one prefabricated insulating panel and its expansion connection;

FIG. 2 is an enlarged fragmentary detailed view of the expansion connection between the insulatedpanels; and

FIG. 3 is a fragmentary detailed view of an expansion corner assembly for insulating panels and the like.

In the construction of industrial type boilers, there is a necessity for exterior insulation not only to prevent heat loss from the heating tubes, but to protect personnel against injuries therefrom. One of the problems in constructing exterior insulating panels for boilers and the like, lies in the damaging elfects of the expansion and contracting characteristics of the panels created by the heating operation of the boiler.

prefr'abricated insulating panels.

Referring to FIG. 1, I show a fragmentary section of a boiler together vw'th my improved insulating panel 19. In theconstruction of a boiler the tubes 11 are encased by horizontally extending vertically spaced channel rnembers 12. The auxiliary elements of the boiler,'such'as the fire pot,;water supply, and associated conduits, are supported by a separate structural frame which includes as'a part thereof a plurality of buck stays.

My improved insulating panel is adapted to be supported 'by'the" buck stays 13 in such a manner that they will be in facial abutment with the boiler tubes 11.

Each insulating panel 10 comprises an exterior metallic corrugated skin '14. Mounted on thei-linner surface of the skin 14 is a plurality of laterally projecting pins 15. Impaled upon these pins. 15 is a sheet of fibrous-insulating material 16. An aluminum backing .17 is likewise r impaled on the pins 15; and covers the exposed side of To this end, I provide an improved expansion joint to be employed between Patented Dec. 29, 1964 the insulating material 16 as it is mounted on the skin 14. A pin retaining washer is is placed over'the exposed end 1? of each of the pins 15 and such end 19 is then bent back upon itself and through the washer 18 to secure the elements of the insulating panel together.

The insulating panels 19 each have certain of their opposite edges formed so as to dovetail with an expan sion insulating band 20 which when mounted together will form an integral insulated outer wall for the boiler as seen in FIG. 1. In order to provide the dovetail connection between the panels 10 and the intermediate expansion insulating band 20, the top horizontal edge of each panel 10 has a cut-out 21 formed in the insulating material 16 immediately behind the corrugated skin 14. The top edge of the corrugated skin 14 exposed by the cut-off 21 provides an insert finger 22, the purpose of which will be hereinafter explained.

The bottom edge of each of the panels 10 has the insulated material 16 stepped as at 23 and 24 rearwardly of the corrugated skin 14 so as to provide a depending lip 25 thereon.

These pre-forrned horizontally extending top and bottom edges of each of the panels 10 are adapted to mate with the expansion insulating band 20, as shown in FIGS.

1 and 2. The panels 10 are connected to the expansion band 29 by means of expansion clips which permit the insulating panels 10 to expand or contract without buck-' ling or separating one from the other. The expansion insulating band 20 includes an insulated backing member 26 of a thickness less than the insulating material 16 carried by the panels 10. The insulatingbacking member 26 is connected by pins 15 to a flat metallic strip 27. This strip 27 has its upper and lower edge portions rearwardly effect so as to provide recessed peripheral flanges 28 and 28', as seen in FIGS. 1 and 2. To the upper flange 28 is connected, by a rivet, screw or the like, one leg 29 of a substantially Z-shaped clip 30; The medial portion 31 of the clip 30 is adapted to be disposed between and in facial abutment with the exposed edge of the depending lip 25 of the corrugated skin 14- of the upper panel 10, and a side edge of the top of the T of the buck stay 13, as shown in FIGS. 1 and 2. 1 The remaining leg 32 of the clip 39 is slightly reversely bent so as to bear upon the exposed vertical surface of the T of the buck stay 13,

as seen in FIGS. 1 and 2, thus effecting a frictional clip connection between the upper insulated panel 10, the

expansion band 20, and the buck stay 13.

Connected to the strip 27 adjacent the bottom offset or recessed flange'28' is the medial portion of an expansion clip 34'. The lower edge portion of the clip 34 is forwardly bent with respect to'the offset of the strip 27 which defines the bottom recessed flange 28, so as to provide a depending finger 35 which cooperates with the recessed flange 23' to form a socket 36 for the insert finger 22 of connection the clip 34 fixedly connects the band 20 to I the buck stay 13. The bottom edge portion '38 of the insulating backing -member-"26, asvwell as, the bottom recessed flange 23"of the band 26 is adapted to be projected into the cut out portion 21 formed. in the upper edge of the lower insulating panel 10.

The upwardly extending insert finger 22' of the corrugated skin 14 is adapted to be insertedinto the socket formed by the depending finger 35 of the clip 34 and the recessed flange 28" of the metal strip 27. As shown in' FIGS. '1 and 2, the cut-out portion 21 is of a size greater I sion band 20. it is into this space that the insulating panel 10 .may expand without disrupting the insulated connection between the panel lil and the expansion band 20. I

Referring to FIGS. 1 and 2, I disclose an insulated insert 39 adapted to be ad esively attached into the re cess formed by the channel members 12. This insulated insert 39 assures that there is no exposed surface of the boiler nor any metallic connections between the channel 7 members 12 and the buck stay 13 through which may be transmitted. 7

Again referring to FIGS. 1 and 2,51 show an insulated conform to the circular exposed surface of'the .tubes '11.

This spacer block as sits in the steppedportion 24 formed in the bottom edge of the insulating panel'lll, as 3 heat spacer block 40 which has one face thereof formed to shown, and permits such panel to expand or contract panels 10. The elements 41 and 41' have their confronting edges formed to provide an overlapping portion 42 and 43 respectively. These portions 42 and 43 are adapted to be normally spaced from each other so as to provide a spacing for expansion of the elements. Each of the elements 41 and ll is provided with a corrugated outer skin 14 which terminate in 'a spaced relation. An' expansion loop 44 is interposed between the spaced ends of the corrugated skin 14 as seen in FIG. 3 and this loop- 44- will change in configuration due'to expansion'or contraction of the elements 41 and 41'.

A metalfiashing 45 is placed over the junction of corrugated skins provided by the side insulating panels 10 and their respective adjacent elements 41 and-41', as seen in FIG. 3.

.While I have illustrated and'described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departing from the spirit of the invention. 1, therefore, do not Wish to be limited to the precise details of construction set forth, but desire to avail myself of such of the appended claims. a a a Having thus described by invention, what I claim as new and desire to protect by Letters Patent is:

1. The combination with a boiler having an insulated wall normally'dispos'ed. in spaced confronting relation thereto, comprising; V I

(a) a plurality of vertically superimposed series of insulating'pariels, 7 7 (12) each panel being formed of fibrous material with the panels oneach series surrounding the boilers circumference in contiguous relationship to one another,

(c) ,a plurality of insulating jbahds extending horizontally around. and. in spaced relation to the boilers circumference and coveringthe junctures between.

adjacent series of insulating panels, 1 (a') an expandable joint-between one edge of each of said bands and a confronting edge, of each of said panels, 1

(e) and a fixedconnection between the other edge of V 50 variations and modifications as come within the. scope (g) an insert fin er provided by said confronting edge of each of said panels for insertion into said socket. 2. The combination with a boiler having an insulated wall normally disposed in spaced confronting relation thereto, comprising; i i V (a) a plurality .of vertically superimposed series of insulating panels, (b) each panel being formed of fibrous materialwith the panels of each series surrounding the boilers cir cumference'in contiguous relationship to one another,

(c) a plurality of insulating bands extending horizontally aroundand inspaced'relation to the boilers circumference and covering the junctures between adjacent series of insulating panels,

(d) an expandablejointbetween.one edge of each of said bands and a confronting edge of each of said panels, f

(e) and a fixed connection between the other edge of each of said bands and the opposite confronting edge of each of said panels, V r

(7) said fixed connectioncomprising a frictional clip carried bysaid other edge of said insulating band with said clip being fixedly connected to said opposite confronting edge of said panel.

3 An insulated wall fora boiler comprising (a) a plurality of sheet metal panels,

(12) a plurality of spaced pins projecting inwardly laterally from one side of and. perpendicular to the '(7) an expansion joint between one edge of said insulating member and a confronting edge of one of said bands,

(g) and means for fixedly connecting the other edge of said insulated band to a juxtaposed abutting insulating member,

(h) said expansion joint comprising a socket provided by said one edge of each of said bands, and

'(i) aninsert finger provided by said confronting edge of eaeh'of said panels for insertion into said socket. 4. An insulated wall for a boiler comprising (a) a plurality of sheet metalpanels,

(b) a plurality of spaced pins projecting inwardly laterally fromione side ;of and perpendicular to the plane of said panels,

(0) each pin being integrally connected to said panels,

(d) an insulating memberimpaled on said pins so as to cover one side of said panels,

(2) an insulated band. interposed between confronting edges of said 1' insulated members when said 1 members are impaled upon said pins,

(1), an expansion joint between one edge of said in} :sulating member and a confronting edge of one of (12) said, last named means: comprisinga friction clip carried-iby. said other edge of said insulated-bandwith said clip being fixedly connected to said oppoa siteconfrontingedge-of said-panel; .f

5. An expandable insulating'wall for-aboiler compris;

ing' 1 each ofsaid bands and theoppositeconfronting edge of each of said panels, I (I) said expandable joint comprisinga socketiprovided by said one edge of each oftsaid bands, and

(a) a plurality of prefabricated insulating panels, b") each panel including a metalliccorrugated outer i V V I I i v V I Q (cyan insulating sheet of material carriedby one face ofcsaid skin, i l L (2 1211 aluhainumbackingmieinbr in facial abutment V with said ins'ulating sheet of material, is i (e) a connecting pin carried by said one face of said skin and upon which the other elements are impaled,

(7) an expansion insulated band disposed between confronting edges of juxtaposed insulating panels,

(g) a clip fixedly carried by one edge of said band and a corresponding confronting edge of one of said panels (h) providing a frictional connection for mounting said band and said panel to a supporting member so as to dispose the same in spaced facial relationship with the exterior surface of said boiler,

(i) a socket forming means on the other edge of said band for freely connecting the corresponding confronting edge of the next panel to said band whereby said next panel may expand or contract without becoming disconnected from said band or disrupting the insulated wall for said boiler,

(j) and a friction clip on said socket means for fixedly connecting said band to the supporting member.

6. An expandable insulating wall for a boiler comprising (a) a plurality-of prefabricated insulating panels,

(b) each panel including a metallic corrugated outer skin,

face of said skin,

(d) an aluminum backing member in facial abutment with said insulating sheet of material,

(e) a connecting pin carried by said one face of said skin and upon which the other elements are impaled,

(f) an expansion insulated band disposed between confronting edges of juxtaposed insulatingpanels,

(g) means carried by one edge of said band and a corresponding confronting edge of one of said panels for providing a connection to a supporting member for said band and said panel,

(h) a socket forming means on the other edge of said band for freely connecting the corresponding confronting edge of the next panel to said band whereby said next panel may expand or contract 'without becoming disconnected from said band or disrupting the insulated wall for said boiler,

(j) and a friction clip on said socket means for fixedly connecting said band to the supporting member.

HARRISON R. MOSELEY, Primary Examiner.

3/55 Godshalk 18934X 

1. THE COMBINATION WITH A BOILER HAVING AN INSULATED WALL NORMALLY DISPOSED IN SPACED CONFRONTING RELATION THERETO, COMPRISING; (A) A PLURALITY OF VERTICALLY SUPERIMPOSED SERIES OF INSULATING PANELS, (B) EACH PANEL BEING FORMED OF FIBROUS MATERIAL WITH THE PANELS ON EACH SERIES SURROUNDING THE BOILER''S CIR CUMFERENCE IN CONTIGUOUS RELATIONSHIP TO ONE ANOTHER, (C) A PLURALITY OF INSULATING BANDS EXTENDING HORIZONTALLY AROUND AND IN SPACED RELATION TO THE BOILER''S CIRCUMFERENCE AND COVERING THE JUNCTURES BETWEEN ADJACENT SERIES OF INSULATING PANELS, (D) AN EXPANDABLE JOINT BETWEEN ONE EDGE OF EACH OF SAID BANDS AND A CONFRONTING EDGE OF EACH OF SAID PANELS, (E) AND A FIXED CONNECTION BETWEEN THE OTHER EDGE OF EACH OF SAID BANDS AND THE OPPOSITE CONFRONTING EDGE OF EACH OF SAID PANELS, (F) SAID EXPANDABLE JOINT COMPRISING A SOCKET PROVIDED BY SAID ONE EDGE OF EACH OF SAID BANDS, AND (G) AN INSERT FINGER PROVIDED BY SAID CONFRONTING EDGE OF EACH OF SAID PANELS FOR INSERTION INTO SAID SOCKET. 